1. (2018八上·柯桥期中) 阅读理解

    Bike-sharing is a new and great idea for short trips in the city. It can also help to keep the city clean and green.

    A new report finds that shared bikes in China make people interested in riding bikes again. Now more and more Chinese people would like to choose shared bikes to take short trips. On the one hand, it is easy to find them on the streets and the heavy traffic won't influence(影响) the riders too much. On the other hand, riding a bike is also a kind of exercise, so it is good for the rider's health.

    The report says that as soon as they appear, fewer and fewer people take short trips by car. Now not only young people who were born in the 1980s and 1990s love shared bikes, but also people over sixty do!

    At weekends, the number of the riders in Shenzhen reaches the top of all cities in China. On weekdays, the number of people who use shared bikes to travel to work is going up in Shanghai.

    Someone thinks that bike sharing will help to improve the cities' environment. It helps to solve the traffic problems. Also, it will help to make better use of space in cities. The most important thing is that it can make the city get less pollution.

    So would you like to try to ride a shared bike to travel, too?

1. （1） What's the main idea of the second paragraph(段落)?

   A . Where people like to take short trips. B . How people take short trips in China. C . When people take short trips by bike in cities. D . Why people choose shared bikes to take short trips.
3. （2） What does the underlined word "them" refer to?

   A . Buses. B . Taxis C . Shared bikes. D . Cars.
5. （3） Which of the following is NOT bike sharing's advantage(优点) according to the passage?

   A . It is good for the environment. B . It helps solve the traffic problems. C . It helps make good use of space in cities. D . It helps people save more money.